"CBlack molded Aluminum case with glass front to exclude dirt and dust is standard for ranges up 400°F(200°C). Black enabled die cast aluminum case is standard for ranges 550° (285°C) and over and is also available for all ranges on special order. ABS case and plastic face are optional. Case should not be subjected to temperatures greater than 200°F. Connection Assembly Swivel nut has 1 1/4-18"" NEF thread. Bulb chambers are tapered to insure proper fit in thermowell."
